Abstract
A convenient, direct, one‐pot highly efficient microwave‐assisted synthesis of biomass‐derived D‐glucose‐based hydroxide ionic liquid via a simple three‐step approach has been described. The key features of the method include rapidness, eco‐friendliness, and excellent yields. To the best of our knowledge, this is the first methodology for synthesizing D‐Glucose‐based sugar ionic liquid (GSIL) under microwave irradiation. The developed catalyst allowed us to synthesize diverse dihydropyrano[3,2‐c]‐chromenes upto 95% yield in 30‐90 min stirring at 80 ̊C under mild conditions. The scope of the study was investigated using 30 instances. Developed GSILs exhibited excellent catalytic activity as well as good recyclability. Overall, the catalyst showed excellent value in green chemistry parameters such as atom economy (95%), E‐factor (0.05), carbon efficiency (100%), process mass intensity (1.62), and reaction mass efficiency (0.860).
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